Floubing-mill



T. CRANE.

Flour Mill.

No. 14,132.. v Patented Jan. 22, 1856.

N. PETERS. Phniv-Lilhogmphcr. Waihmglon. I10.

UNITED STATES PATENT UFFTQE.

THOMAS CRANE, OF FORT ATKINSON, WISCONSIN.

FLOURING-MILL.

Specification of Letters Patent No.

To all whom it may concern Be it known that I, THOMAS CRANE, of FortAtkinson, in the county of Jefferson and State of Wisconsin, haveinvented a new and useful Improvement in Flouring- Mills; and I dohereby declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawings, making a partof this specification.

Figure 1, is a top view of my improved flouring mill, with the capremoved, and Fig. 2, is a vertical section in the line y, y, of Fig. 1.

Similar letters indicate like parts in both figures.

The bed-stone b, of my improved fiouring mill, is inclosed within ametallic hoop p, which rises from a suitable bed-plate p. The bed m, onwhich the bed stone rests, should be so proportioned as to cause theface of said stone to always be a little above the upper edge of itsinclosing hoop. Between the outer surface of the inclosing hoop p, andthe bed plate p, from which it springs, there is an annular open spacewhich communicates with a discharging spout n. An ofiset at one side ofthe said annular space, has a segment-shaped recess 9, which receivesthe adjustable bearing boxes j, j, of the vertical journals of tworollers 2', 2'. Two fianched rollers f, f, are located in ofisets fromthe annular space which surrounds the hoop p; which offsets, aresituated about equidistant from each other and from the aforesaidrollers i, 2'. The horizontal journals which project outward from thesaid rollers f, f, are received into bearing boxes g, g, which fitaccurately into radial slots in the base-plate p, and the outerextremities of said journals, are acted upon by set screws h, h, asshown in Fig. 2. A deep metallic hoop 0, having a broad fianch (Z,projecting outward from its upper end, is received into the outerportion of the annular space surrounding the bed-stone inclosing-hoop p,and is supported by means of its projecting fianch (Z, resting upon thebarrels of the rollers f, f, and the upper ends of the rollers z, 2'.The

peripheries of the rollers 71, z, bear against 14,132, dated January 22,1856.

the outer periphery of the hoop 0, and the flanches of the rollers f, f,bear against the outer periphery of the fianch (Z, of the said hoop 0.The set screws h, it, therefore enable the said hoop 0, to be securelysupported and its position adjusted between the rollers i, i, and f, f.Wings 6, e, are connected to the inner periphery of the hoop 0, whichproject inward until they are brought nearly in contact with the hoop p.A driving pulley 7c, is located between and a little outside of therollers 2', z', the shaft of whichdriving pulleypasses down through thebase plate 7) and has a pulley, or cog-wheel, upon its lower end bywhich it is connected to any suitable machinery for impart-ing motion toit and to the hoop a, to which it is connected by means of the band Z. Aslow motion should be imparted to the hoop 0, (Z, which will cause itswings to move the flour, or meal, discharged into the annular spacesurrounding bed-stone,

slowly around and discharge the same through the spout n.

It will therefore be perceived, that the aforesaid arrangement of theannular space around the bed-stone, and the winged hoop moving therein,will prevent the flour, or meal, from accumulating about the runningstone and heating, at the same time that it serves in a considerabledegree to cool the meal, before discharging it through the spout n.

lVhat I claim as my invention and desire to secure by Letters Patent, is

Securing the bed-stone within a hoop rising from a suitable bed-plate,when the said hoop has an open annular space surround ing it, which issupplied with a discharging spout and has a rotating winged hooparranged and operating therein substantially in the manner and for thepurpose herein set forth.

The above specification of my improvement in flouring mills signed andwitnessed this 28th day of Deer. 1855.

THOMAS CRANE.

W'it-nesses RUssnL FRISBY, Jr., JOHN T. CURTIS.

